Generation of supersonic and super-Alfv?nic flow using ICRF heating and a magnetic nozzle

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概要

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• Fast-flowing plasmas in supersonic and super-Alfvénic regime are generated in combined experiments of ion cyclotron resonance heating (ICRH) and acceleration in a magnetic nozzle. During radio-frequency (RF) wave excitation in a fast-flowing plasma produced by a magnet-plasma-dynamic arcjet (MPDA), strong ion cyclotron heating is clearly observed. Thermal energy in the heated plasma is converted into flow energy in a diverging magnetic nozzle, where the magnetic moment μ is nearly kept constant. Plasma flow energy can be controlled by changing the input RF power and/or modifying the magnetic nozzle configuration. In a strongly diverging magnetic nozzle, an Alfvén Mach number as well as ion acoustic Mach number are more than unity, that is, supersonic and super-Alfvénic plasma flow is realized.

著者

• Ando Akira

  Graduate School Of Agriculture Hokkaido University

• Inutake Masaaki

  Research Information Center Institute Of Plasma Physics Nagoya University:institute Of Plasma Physic

• Hagiwara Tatsuya

  Graduate School Of Engineering Osaka University

• INUTAKE Masaaki

  Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan

• Komagome Toshihiro

  Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan

• Hattori Kunihiko

  Nippon Institute of Technology, Saitama 345-8501 Japan

• HAGIWARA Tatsuya

  Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan

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• Generation of supersonic and super-Alfv?nic flow using ICRF heating and a magnetic nozzle

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